However, according to a statement via the north west outfit's official website, despite the majority of the travelling fans being "impeccably behaved", five were left injured ahead of kick-off.

"The vast majority were once again impeccably behaved with the coaching operation to transport supporters to the ground put in place by the club again a great success, as it was in the previous round in Istanbul," the statement read.

The statement went on to add that Greek police arrested 22 Burnley fans for drunk and disorderly behaviour; however, were released on Thursday night without charge.

The Clarets now face a tough test to secure passage into the group stages of the competition, with a two-goal deficit standing in the way after a first half Chris Wood penalty was not enough to stop Olympiakos taking the advantage.